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Celestron Scope 90 manual

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Table of contents for the manual

  • Page 1

    I I N N S S T T R R U U C C T T I I O O N N M M A A N N U U A A L L[...]

  • Page 2

    2 Table of Contents INTRODUCTION .......................................................................................................................... 3 ASSEMBLY ................................................................................................................................... 5 Setting up the Tripod ...........................[...]

  • Page 3

    3 Congratulations on your purchase of the Sk yScout Scope. The SkyScou t Scope is made of the h ighest quality materials to ensure stability and durability. All this add s up to a telescope that gives you a lifetim e of pleasure with a minim al amount o f mainte nance. This telescope was designed for use with the Celest ron SkyScout Pe rsonal Plane[...]

  • Page 4

    4 Figure 1-1 SkyScout Scope 90mm Refractor 1. Objective Lens 7. Erect Image Diagonal 2. Telescope Optical Tube 8. Focuser 3. SkyScout (not included) 9. Pan Handle 4. SkyScout Bracket 10. Tripod 5. Finderscope 11. Accessory Tray 6. Eyepiece 12. Alt-Az Mount 1 2 3 4 5 6 7 12 8 11 9 10[...]

  • Page 5

    5 This section covers the assembly in structions for your Sk yScout Sc ope. Your telescope should be set up indoo r the first time so that it is easy to identify the various parts an d familiarize yourself with th e correct assem bly procedure before attempting it outdo or. Each SkyScout Scope includes – opti cal tube with attached SkyScout brac [...]

  • Page 6

    6 M M o o v v i i n n g g t t h h e e T T e e l l e e s s c c o o p p e e M M a a n n u u a a l l l l y y The SkyScout Scope Alt-Az m ount is easy to move wherev er you want to poi nt it. The up and down (altitude) is controlled by the pan ha ndle (Figure 2- 10). The side-t o-side (azi muth) is cont rolled by t he azimuth loc k (Figure 2- 9). The p[...]

  • Page 7

    7 I I n n s s t t a a l l l l i i n n g g t t h h e e D D i i a a g g o o n n a a l l The diagonal is a prism that diverts the light at a right an gle to the light path of the refractor. This allows you to observe in a pos ition that is more comfortable than if you looked straight through . This diagonal is an erect image model that corrects the im[...]

  • Page 8

    8 3 Center your target in the main optics of th e telescope. You may have to move the telescope slightly to center it. 4 Adjust the screw on the side of the finder brack e t un til the cross hairs are centered horizontally on the target seen through the telescope. 5 Adjust the screw on the top of the finder bracket until the cross hairs are cen ter[...]

  • Page 9

    9 A telescope is an instrument that collects and focuses light . The nature of the optical design determines how the light is focuse d. Some te lescopes, known as refract ors, use lenses, .a nd other tel escopes, known as reflectors (Newtonians), use m i rror s. Developed in t he early 1600s, t he refractor i s the oldest telescope desi gn. It deri[...]

  • Page 10

    10 Magnificatio n = ⎯⎯⎯⎯ ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Focal Length of Eyepiece (mm ) Let’s say, for example, you are us ing the 10mm eyepiece that came with your telescope. To determine the magnification you simpl y divide the focal le ngth of your tel escope (the SkySco ut Scope for t his example has a focal length of 660mm) by the foc[...]

  • Page 11

    11 With your telescope set up, you are r e ad y to use it for observ ing. This section cov ers visual observing hints for both solar system and deep sky objects as well as general observ ing condition s which will affect your ability to observ e . O O b b s s e e r r v v i i n n g g t t h h e e M M o o o o n n Often, it i s tempting to lo ok at the[...]

  • Page 12

    12 O O b b s s e e r r v v i i n n g g D D e e e e p p S S k k y y O O b b j j e e c c t t s s Deep-sky objects are simply those object s outsi de the boundaries of ou r solar system. They include s tar clusters, planetary nebu lae, diffuse nebul ae, double st ars and other galaxi es outside our o wn Milky Way. M ost deep-sky objects have a large a[...]

  • Page 13

    13 While your telescope requires little maintenan ce, there are a fe w things to rem ember that will ensure your telescope performs at its best. C C a a r r e e a a n n d d C C l l e e a a n n i i n n g g o o f f t t h h e e O O p p t t i i c c s s Occasionally, dust and/or m oisture may bu ild up on the objective lens or prim ar y mirror depending[...]

  • Page 14

    14 You will find that additional accesso ries for your SkyScout Scope w ill enhance your viewing pleasure and expand the useful ness of your telescope. Thi s is ju st a short listing of va rious accessories with a brief description. Visit the Celestron website or the Celestron Accessory Catalo g for complete descriptions and all accessories availab[...]

  • Page 15

    15 TECHNICAL SPECIFICA TIONS 21068 Optical Design 90mm (3.5") refractor Focal Length 660mm F/7.3 Optical Coatings Fully coated Finderscope 6x30 Erect Image Mount Altazimuth Eyepieces 40mm (16.5x), 10mm (66x) Star Diagonal Erect Image diagonal -1.25" Tripod 1.25" steel tube legs CD ROM The Sky L1 Other Accessories SkyScout Bracket w/h[...]

  • Page 16

    2835 Columbia Street Torrance, CA 90503 U.S.A. Tel. (310) 328-9560 Fax. (310) 212-5835 Website www.celestron.com Copyright 2007 Celestron All rights reserved. (Products or instruct ions may change without notice or obligation.) Item # 21068-INST Printed in China $10.00 11-07[...]